4104 vibration at speed

[fortyniner]

Any recommendations for a torque multiplier? Would be handy for lug nuts.

Ive heard about seat issues on some of these Hemis especially if it overheats. This one is a 2011 and valves/seats are still in good shape. One lifer roller is seized and its cam lobe is rounded off.  Cose examination of other lobes shows a few with pitting starting on nose. It reminds me of a wheel bearing race that's starting to fail. Lifter rollers for those lobe are still ok.  I suspect its cam lobe breakdown that starts the process and lifter failure is the last stage.

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Don't know if this is advisable on a 4101 but we tracked down driveline vibration on a car by putting axle on jackstands and running it at highway speed. Ours was a bad ujoint install causing drive shaft vibration at tranny.

[dtcerrato]

Our torque multiplier isn't the lug nut style. It looks like a beefy socket ratchet with a 2' handle. It's 3/4" input & 1" output square drives.

The Hemi valve seat issue mostly disappeared with the 2009 model & newer. There were specific issue with 2011 models but don't know the details - wonder if the cam/lifter is part of that?

If we allow our bus drivetrain (drive shaft, & universal joint grease fittings to get deprived of regular lubing - the drive line will develop a vibration - especially on turns under a load. With regular lubing it runs smooth. I would contribute this to worn parts (excessive clearance) in the U joints and specifically the driveshaft slip spline yoke.

[chessie4905]

also a worn out slip joint can cause it. Find a bigger drive shaft shop that can chuck the whole shaft assembly on their lathe.

[sledhead]

nut buster
removes bus tire lug nuts like they are fingner tight and no more air compressor or air lines and works great on all nuts

https://www.milwaukeetool.com/Products/Power-Tools/Fastening/Impact-Wrenches/2764-20

[fortyniner]

Right been eyeing one of those. But how to torque them back down is still a problem for me. I mean a 5 foot bar and digital torque adapter is how I did it last time but its no fun.

[chessie4905]

Might as well go with their 1" battery wrench. 1800 lb. ft. Torque.
I have Harbor Freight's 3/4" version. May not be quite as high torque as the fuel, but lots cheaper and works fine on my lug nuts.